Bag W ei g h t (o z)
l I I I l l I I I l I I I l l I I l l l l»
16 16.5 17 17.5 18
Device 1Device 2
—CO-(525)24. Pack ag i n g A cereal company is choosing between
two devices to package their cereal into bags. The
box-and-whisker plots at the right show the weights of
the bags packed by each device.
a. Which device produces packages with a more
consistent weight? Explain.
b. Which device should be chosen if the manufacturer
wants to minimize the number of packages with weights less than 17 oz? More
than 17.2 oz? Explain.^ Challenge 25. Reasoning Can you find the mean, median, and mode of a data set by looking at a
box-and-whisker plot? Explain.
- Of 100 people that take a test, nine have scores greater than 93. What is the
percentile rank of a score of 93?
Apply What You've Learned
Look back at the information on page 725 about the baseball tournament for
which Luis must choose a location. The tables of weather data are shown
again below.MATHEMATICAL
PRA CTI CES
MP4Oakville Climate Data for August
mmmmm 2004
Rai n f al l ( i n .) 2.4 4.2 1.8 15.1 2.6 2.3 2.0 4.2 3.8 2.1
Avg. Temp. (°F) .....; 78 84 89 72 74 77 82 87 76 78
Hurricane? no yes no yes no no no yes yes noFai r v i e w Cl i m at e Dat a f o r Au g u st
Year 2005 2006 2007 2008 HEifEi
Rai n f al l ( i n. ) 4.5 1.8 2.2 5.0 5.1 4.5 2.3 3.8 4.5
Avg. Temp. (°F) 83
...........77 82 80 87 86 86 82 83
Hurricane? no no no yes no yes no no noa. Make box-and-whisker plots to represent the temperature data for Oakville and
Fairview.
b. What conclusions can you make about the temperatures in August in the two cities?c. Luis finds that the average August temperature in Fairview in 2004 was 73°. How
would including this additional data value change the box-and-whisker plot you
made in part (a)? Would it change the conclusions you made in part (b)?I Lesso n 12- 4 1 --—---------—Bo x - an d - W hi sk er Pl ot s---.............................................—- ] 7 5 1
‘--------------------------^ -----------------------------------------------------